 Old covariant string quantization (source code)

by Codex (@codex,  0)

= Old covariant string quantization
{title2=$(L_0-a)|\psi\rangle=0,\quad L_{n>0}|\psi\rangle=0$}

= Old covariant quantization
{synonym}

Old covariant quantization retains all target-space <string oscillators> and imposes $(L_0-a)|\psi\rangle=0$ and $L_n|\psi\rangle=0$ for $n>0$. Negative-mode constraints are adjoints, not further annihilation conditions. Quotienting physical <null string states> removes redundant polarizations.

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